diff --git a/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp b/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
index 1a2ab237..55a60186 100644
--- a/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
+++ b/src/Graphics/OpenGLContext/opengl_ContextImpl.cpp
@@ -274,7 +274,9 @@ graphics::PixelWriteBuffer * ContextImpl::createPixelWriteBuffer(size_t _sizeInB
 
 graphics::PixelReadBuffer * ContextImpl::createPixelReadBuffer(size_t _sizeInBytes)
 {
-	return m_createPixelReadBuffer->createPixelReadBuffer(_sizeInBytes);
+	if (m_createPixelReadBuffer)
+		return m_createPixelReadBuffer->createPixelReadBuffer(_sizeInBytes);
+	return nullptr;
 }
 
 graphics::ColorBufferReader * ContextImpl::createColorBufferReader(CachedTexture * _pTexture)